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Station.pas
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Station.pas
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//------------------------------------------------------------------------------
//This Source Code Form is subject to the terms of the Mozilla Public
//License, v. 2.0. If a copy of the MPL was not distributed with this
//file, You can obtain one at http://mozilla.org/MPL/2.0/.
//------------------------------------------------------------------------------
unit Station;
interface
uses
SysUtils, Classes, Math, SndTypes, Ini, MorseKey;
const
NEVER = MAXINT;
type
TStationMessage = (msgNone, msgCQ, msgNR, msgTU, msgMyCall, msgHisCall,
msgB4, msgQm, msgNil, msgGarbage, msgR_NR, msgR_NR2, msgDeMyCall1, msgDeMyCall2,
msgDeMyCallNr1, msgDeMyCallNr2, msgNrQm, msgLongCQ, msgMyCallNr2,
msgQrl, msgQrl2, msqQsy, msgAgn);
TStationMessages = set of TStationMessage;
TStationState = (stListening, stCopying, stPreparingToSend, stSending);
TStationEvent = (evTimeout, evMsgSent, evMeStarted, evMeFinished);
TStation = class (TCollectionItem)
private
FBfo: Single;
dPhi: Single;
FPitch: integer;
function GetBfo: Single;
procedure SetPitch(const Value: integer);
protected
SendPos: integer;
TimeOut: integer;
NrWithError: boolean;
function NrAsText: string;
public
Amplitude: Single;
Wpm: integer;
Envelope: TSingleArray;
State: TStationState;
NR, RST: integer;
MyCall, HisCall: string;
Msg: TStationMessages;
MsgText: string;
constructor CreateStation;
procedure Tick;
function GetBlock: TSingleArray; virtual;
procedure ProcessEvent(AEvent: TStationEvent); virtual; abstract;
procedure SendMsg(AMsg: TStationMessage);
procedure SendText(AMsg: string); virtual;
procedure SendMorse(AMorse: string);
property Pitch: integer read FPitch write SetPitch;
property Bfo: Single read GetBfo;
end;
implementation
{ TStation }
constructor TStation.CreateStation;
begin
inherited Create(nil);
end;
function TStation.GetBfo: Single;
begin
Result := FBfo;
FBfo := FBfo + dPhi;
if FBfo > TWO_PI then FBfo := FBfo - TWO_PI;
end;
function TStation.GetBlock: TSingleArray;
begin
Result := Copy(Envelope, SendPos, Ini.BufSize);
//advance TX buffer
Inc(SendPos, Ini.BufSize);
if SendPos = Length(Envelope) then Envelope := nil;
end;
procedure TStation.SendMsg(AMsg: TStationMessage);
begin
if Envelope = nil then
Msg := [];
if AMsg = msgNone then begin
State := stListening;
Exit;
End;
Include(Msg, AMsg);
case AMsg of
msgCQ: SendText('CQ <my> TEST');
msgNR: SendText('<#>');
msgTU: SendText('TU');
msgMyCall: SendText('<my>');
msgHisCall: SendText('<his>');
msgB4: SendText('QSO B4');
msgQm: SendText('?');
msgNil: SendText('NIL');
msgR_NR: SendText('R <#>');
msgR_NR2: SendText('R <#> <#>');
msgDeMyCall1: SendText('DE <my>');
msgDeMyCall2: SendText('DE <my> <my>');
msgDeMyCallNr1: SendText('DE <my> <#>');
msgDeMyCallNr2: SendText('DE <my> <my> <#>');
msgMyCallNr2: SendText('<my> <my> <#>');
msgNrQm: SendText('NR?');
msgLongCQ: SendText('CQ CQ TEST <my> <my> TEST');
msgQrl: SendText('QRL?');
msgQrl2: SendText('QRL? QRL?');
msqQsy: SendText('<his> QSY QSY');
msgAgn: SendText('AGN');
end;
end;
procedure TStation.SendText(AMsg: string);
begin
if Pos('<#>', AMsg) > 0 then
begin
//with error
AMsg := StringReplace(AMsg, '<#>', NrAsText, []);
//error cleared
AMsg := StringReplace(AMsg, '<#>', NrAsText, [rfReplaceAll]);
end;
AMsg := StringReplace(AMsg, '<my>', MyCall, [rfReplaceAll]);
{
if CallsFromKeyer
then AMsg := StringReplace(AMsg, '<his>', ' ', [rfReplaceAll])
else AMsg := StringReplace(AMsg, '<his>', HisCall, [rfReplaceAll]);
}
if MsgText <> '' then
MsgText := MsgText + ' ' + AMsg
else
MsgText := AMsg;
SendMorse(Keyer.Encode(MsgText));
end;
procedure TStation.SendMorse(AMorse: string);
var
i: integer;
begin
if Envelope = nil then begin
SendPos := 0;
FBfo := 0;
end;
Keyer.Wpm := Wpm;
Keyer.MorseMsg := AMorse;
Envelope := Keyer.Envelope;
for i:=0 to High(Envelope) do
Envelope[i] := Envelope[i] * Amplitude;
State := stSending;
TimeOut := NEVER;
end;
procedure TStation.SetPitch(const Value: integer);
begin
FPitch := Value;
dPhi := TWO_PI * FPitch / DEFAULTRATE;
end;
procedure TStation.Tick;
begin
//just finished sending
if (State = stSending) and (Envelope = nil) then begin
MsgText := '';
State := stListening;
ProcessEvent(evMsgSent);
end
else //check timeout
if State <> stSending then begin
if TimeOut > -1 then
Dec(TimeOut);
if TimeOut = 0 then
ProcessEvent(evTimeout);
end;
end;
function TStation.NrAsText: string;
var
Idx: integer;
begin
Result := Format('%d%.3d', [RST, NR]);
if NrWithError then begin
Idx := Length(Result);
if not CharInSet(Result[Idx], ['2'..'7']) then
Dec(Idx);
if CharInSet(Result[Idx], ['2'..'7']) then begin
if Random < 0.5 then
Dec(Result[Idx])
else
Inc(Result[Idx]);
Result := Result + Format('EEEEE %.3d', [NR]);
end;
NrWithError := false;
end;
Result := StringReplace(Result, '599', '5NN', [rfReplaceAll]);
if Ini.RunMode <> rmHst then begin
Result := StringReplace(Result, '000', 'TTT', [rfReplaceAll]);
Result := StringReplace(Result, '00', 'TT', [rfReplaceAll]);
if Random < 0.4 then
Result := StringReplace(Result, '0', 'O', [rfReplaceAll])
else
if Random < 0.97 then
Result := StringReplace(Result, '0', 'T', [rfReplaceAll]);
if Random < 0.97 then
Result := StringReplace(Result, '9', 'N', [rfReplaceAll]);
end;
end;
end.